4. RE: Multicurrency

You can import the COA to the company that does not use USD as their functional currency. If you are going to be reporting transactions in this company in USD the Select Account Currencies window has to be populated:

My apologies for not being able to answer this as I am not well versed in IM, but if the import includes this window/field it will save having to create a Macro or manually enter this information after the import.